Dumb-waiter door



'Patented May2,1922.

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B. WEIXLER. DUNIB WAITER D003. AljPLlcATlpN FILED MAY6,19,20.

Patented M3372, 1922.

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- is so constructed as to be capable of installa-v .STATES lirryrlezla'rl o-FlflclL-z.y

BENJAMIN WEXLER. OF BROOKLYN NEW YORK, ASSIGNOR TO TI-E PEELIIE COMPANY,

' v0F BROOKLYN. NEW YORK, A CORPORATION OE NEW YORK.

DUMB-WAITER DOOR.

-Application yfiled'May 6,

provements in DumbLWaiter Doors, of`

which the following ,is a specification, reference being had 'therein to the accompanyi drawings, which form a part thereof.

- y y invention relates to dumbwaiter doors, and more particularly to Aajfireproof structure of this type.

The main object of the invention is to provide a dumbwaiterldoor structure wherein the door and itsframe at thedoor opening tion as a unit in the masonry of the dumbwaiter shaft, thus vavoiding any necessity for fitting or assembling the various elements enteringinto the door structure by mechanics during the erection of the building, and-vat the same time ensuring a fiXe'd permanent relation of parts which will ensure a free easy movement of the door panels in opening and closing same after the completion of the installation. l Theframe which is -composed entirely of metal so as to be reproof, not only includes therein suitable guides o r tracks for afmovable door which preferably is of the multiple' section, counterbalanced or-semi-automatic type, but also cross braces forming that portion of the sill and lintel'of the shaft opening` adjacent the door.'

he side bars and the cross braces are so constructed as to close any gaps about the shaft opening, thus forming a metal barrier about this opening which will prevent the passage of smoke or flames between the Kframe and the masonry wall, and at the same time lend rigidity and strength to the'entire door structure. l To prevent vpossibility of the displacement of the frame,l I preferably provide the side bars thereof with suitable anchors adapted to be imbeddedin th'e masonry-wall, thus making the frame with the'wall.

substantially integral In order to include a factor of safety in the operation of the device, I provide one of the side hars of theframe at a'poinitfwhere it will be-accessible from the Hoor side of a shaft, with a hand-operated locking mechanism which will lock the doors when they Specification of Letters Patent.

1920. seriaiN'o 379,345.'

Patented May 2, 1922,;

are in eitherA-theopened or the closed position. A

' The doors themselves are so constructed and combined in relation to the meta-l fram'e, that they will expose substantially the entire area of the ldoor opening when the door is opened Aand yet will have the opening movement thereof so limited as to'preclude any possibility of theuser imparting such a movement to thedoor structure as will in- -terfere with access4 theretoiwhen it is desired to close the door. l

.The invention consists primarily in aj.

dumbwaiter door embodyingtherein metal 4side bars, guides or tracks ca'rriedhy said hars respectively, cross braces carriediby said bars, said braces being spaced apart a distance equaling the height of a shaft opening, a vertically movable door structure mounted upon said guides or tracks and adaptedl to close the'space within said side bars and said cross braces, pulleys above the upper of said crossbraces, and a suspension cable co-operating with said door structure and said pulleys; and' in such other novel features of construction and combination of parts as are hereinafter set forth and described, and more particularly pointedV out in the claims hereto appende Referring to the drawings, IF ig. 1 is au elevation of a dumbwaiter door embodying my invention, fro'm the shaft side thereof;

Fig. 2 is a vertical section therethrough; Fi-g.- 3 is a horizontal section at approximately the meeting sections; and v Fig.' 4 is anisometric ,View of the door structure :with the door panels-'removed therefrom. Y Y

pointof the two doorl Like letters refer to like parts through- 3 out the several views. t 1.1.1. c

In theemhodimentof the invention shown in the drawings, /t/and b' indicate two vertically extending side bars formed of angle iron, one iange /-'b of each barvbeing adaptedv toiextend yparallel with the wall of theshaft,l and the other flange n-b2 being adapted to forni part of the opposite jambs of the shaft opening adjacent the -wall of said shaft.

The flanges d b have rivetted, bolted, or otherwise securedthereto, vertically eX- tending 'tracks or guides. .preferably formed of fiat metal strips c-d extending parallel Q Largest] l The guides or tracks with said ianges and spaced away therefrom the desired distance by means of the vertically extendingbars c-'d disposed between saidI strips and the said flanges. are preferably vshorter than the side bars. the construction of track described, nogaps are presented adjacent the flanges ZL-b', through which smoke or flame might pass.

To facilitate the mounting of the frame in relation'to the masonry wall, l preferapleted building without disturbing the wall bly employ angular anchors e adapted to be imbedded in the masonry aboutthe shaft opening, a construction, which especially` adapts the door structure to be used in Ybuildings during erection, although if it be desired to installthis structurein a comadjacent the shaft, the flanges t Ina'y be utilized to secure the entire frame-in positionfby any of the well known expediente j known inthe freproof elevator door art..

Connecting the side ,bars db are cross braces f-g preferably formed of angle iron securedto the flanges Z-f of the side bars Y by means of angle brackets h and z'. The

crossbra'ces in addition to acting aspstaysI for imparting thev 'desired rigidity to the structure .of the frame, also form a part of the lintel and sill of the shaft opening and forma barrier to fire and smoke at'the l Y top and the bottom of the shaft opening. `The brace fin addition to this, supports v that part ofthe masonry ofthe wall above same. Y Y The flanges f and g of the cross braces j and gf are in the same vertical plane as the flanges a and b" of the side bars, while. the

vl'anges. f2'-g2 occupy parallel horizontal planes, said braces being spaced apart a distance coinciding with the height of the door opening.

Adjacent thel upper end ofthe bais a-b is a crossbar j having a pulley or sheave box jj2 formed at-each end thereof, preferably by bending the ends of this bar to form, and rivetingthel bent end to the bar.

,Mounted in the boxes y"-j2 are thepulleys Closing the. space within the side 'bars' w-b and the cross braces f-g is a door structure whlch, in the form of. the invention shown, consists of two vertically movaof each of said chains is connected to the top rail of the frame of the upper door m and the other end of each of said chains is connected to hanger clips nf secured to the opposite side rails of the lower door section n.

The`upper door 'section m has upon the `bottom rail thereof," an astragal 'mf of a width to enter the door opening between the side bars a and and thus serve the two-fold function of closing any gap at the parting i sections by engagement with the cross brace lt will be observed by f rllhis'astragal is also iitilizedpas a part of the locking means to hold the doors in their opened or closed position.

'llhe door sections m and @may be of any desired or approved ireproof structure, these sections in the form ofthe invention shown,

bei-ng composed of an, angle iron frame wb2-n2 .supporting a sheet metal panel 7a3-fc3. The opposite side bars of the frame m2 nd a2 each-have ermanentl secured i Ps -sidebar a or b so as tobe exposed upon the floor -side of the frame structure, is a mann ually operative locking mechanism adapted to co-operate with the astragal m', and either hold the door in the opened or the closed position, as the'case may be. This mechanism in the form ofthe invention shown in the drawings, consists of an oscillatory lever g pivoted adjacent the lower end -thereof and having adjacent the top thereof a pro` lprojecting heel g3 adapted to'engage a stop 'l' carried by the side bar.

Acting upon the lever g is a spring s havagainst the stop 1" and .project the bevelled jecting'stop g having a downwardly pre-l sented bevelled portion, and intermediate 1o5` .ing a normal tendency to holdthe heel g3 portions of the stops g-g2 in the path of i movement of the astragal m.

The lever g is pivotally mountedupon' a plate 't permanently secured to one of the side bars as a', whichvplate has a segmental opening t therein adapted to receive a pin g* carried by said lever. Secured to the lever q is a hand-hold` u by means of which'saidl lever may be oscillated against the tension of the spring s.

The operation and advantages of the 'herein described dumbwaiter door are substantially as follows YA dumbwaiter door made in accordancel with my invention is completely assembled in the shop, the side bars arf-Z), cross braces f-g and cross strip j all being cut to the proper dimensions and permanently united under conditions which ensure the desired t accuracy in the relation of the several parts and ease'of operation ofthe doors. If desired, the doors may be assembled in the structure at the shop so that the assembling of the structure in orms a part of the masonry construction and" Alever upperdoor section sure applied 'to the sible to release the lever-immediately a building under erection,

door equipment.v

Of course, if

require nospecial mechanics to install the desired, the shaft opening closed by the doors may befinished with any desired trim, this, however, having no relation to my invention.

When the door structuie is installed in 'the building, the flanges i2-a2, -b2

s l and .rf-g2 form a noninflammable barrier Aabout the shaft opening, the-frames WzL-n.2 being held sufficiently close to the flange's a,7) by the rails or guides c dan-d by the angle barsp-p,

pass about the door sections m in a room from the dumbwaiter shaft.

By lemploying'a'mul-tiple section door o'f the .counterbalancedor the 'semi-automatic type, ease of operation of the door is secured, and compactness in the dumb-waiter in` stallation is possible. n

When the door is closed, the spring s will hold the lever g in -position with the stop g2 in engagement With the top of the astragal m. To open a door it is necessary to use the hand-hold u to draw outwardly and disengage this stop. from t e astragal.;

When the stop is .thus disengaged, the

may be `raised by presastragal, it being -posfollowing the initial movement of the door.

The opening movement of the door sec-4 tions lvvill be limited by the engagement of the astragal m with the flange f2 at the lintel of the shaft opening, the engagement of the'astragalwith the bevel of the stop g actuating the lock mechanism. so as to hold the door inthe opened position.

To permit the cl necessaryto use the hand-hold u to retract the stop g from its operative relation to the astragal m.

When doors vof the counterbalanced type are used, the astragal is always accessible to facilitate the closing of the doors, which is also true if a `self-opening type of semi-auftomatic door is -iised. If, 'honievegsa selfit isenecessary to use the astragal only to open Vthe doors.

It is not my intentionV to limit the inven-V tion to the precise details ofconstruction shown in the accompanying drawings, it be,

ing apparent that such may be varied Without departing from the spirit" and scope of theinvention.

Having described the inventionpivhat I claimas newand desire to have protected by Letters Patent, is

'1. A dumbwaiter door embodying therein metal side bars, guides or tracks carried by toleave no gaps of suffi! .cient Width to permit smoke or flame to' anda to vviththe upper arm of the.

osing of the door, it isy a distance eqiialing the ,height of a shaft opening, a vertically movable door structure mounted upon said guides or tracks and adapted'to close the space ivithin said side 4barsand said cross braces, pulleys above the upper-of said cross braces, and a suspension -cable co-operatingwith said door structure and said pulleys.

v 2. A dumbwaiter door embodying therein vertically extending metal angle bars each having onev flange adapted to extend parallel with the wall of a dumbwaiter. shaft, .and a flange-adapted to forma sidev jamb of au opening in said shaft,guides or tracks carried by said first named flange in the shaft.

cross bra-ces carried by said 4last named flanges and spaced apart a .the height 'of ashaft opening, a vertically movable door structure mountedupon said guides orI tracks and adapted to close the` Space-Within said 'side .bars and 'said cross braces, braces, and a lsuspension cable co-operating with said door structure and said pulleys.l

3. A diimbyvaiter door 'embodying therein vertically extending ine-tal angle bars each having one Harige adapted to extend parallel with the .Wallofa dumbivaiter shaft, and

a flange adapted to form a side liamb'of an opening in said shaft, guides or tracks car-hv ried bysaid first named flange in the shaft, angle iron bracesv carried by saidY last named flanges, one flange of each of said braces being substantially flush' With the firstv named Harige of said vertical angle bars, and the other'flanges of said braces being parallel and spaced apart a distanccequaling the height of said shaft opening and forniing the lintel and sill of said opening, a vertically movable door structure vmounted upon said guides or Vtracks and adapted to close the space within said side bars and .said cross braces, pulleys above the upper -0f said cross braces, and a suspensien' cable cooperating with said door structure land said pulley A. A vdumbwaiter doorJ embodying therein vertically extending Vmetal ,angle bars each having one flange adapted to extend parallel ofadulmbwaiter shaft, and a flange adapted to form a side jamb of an jopening in said shaft` anchors-projecting -lrom'said last named flanges and adapted to beimbedded in thc masonry of a wall, guides 0r tracks carriedby said first named flange in theshaft, crossbraces carried by said last named flanges and spaced apart a distance -equaling' the height of a shaft opening. a vertically4 movable door structure molinted upon said guides or tracks and adapted to close the said cross braces, pulleys -of said lcross braces, and a suspension cablp distance equaling pulleys above the .upper of said cross space within 'said side bars and A above the upper `co-operating with said door structure l,and said pulleys. y

5. A dumbwaiter door embodying therein metal side bars, guides or tracks carried by said bars respectively, cross braces carried by said bars, said braces being spaced apart a distance equaling the height oi'-v a shaft opening, two vertically and oppositely movable door sections mounted upon said guides ory tracks and'adapted together to close the space within said side bars and said cross braces, pulleys above the upper of said cross braces, hanger `clips carried by the lower of saidsections, suspension cablessecured to the opposite sides of the top of the upper.

of said sections and to said clips, and passing about said pulleys, and a locking lever having a'plurality of stops thereon adapted to co-operate with one of said door sections.

and retain said section in either the opened or the closed position. y

6. A dumbwaiter door embodying therein metal side bars, guides or tracks carried by said bars respectively, cross braces carried by said bars, said braces being spaced apart a distance equaling the height of a shaft opening, two `vertically and oppositely movable door sections mounted upon said guides or tracks and adapted together to close the space within said side bars and said cross braces, an astragal carried by the upper of said sections and projecting within said shaftopening, pulleys above the upper of .said crloss braces, hanger clips carried bythe lowbr of saidsections, a suspension cable-secured to the opposite sides of the top of the upper of said sections and to said i clips respectively, and passing about said Vhaving one flange adapted to extend par-.

allel with the wall of a dumbwaiter shaft,`

and a flange adapted to form a side'jamb of an opening in said shaft,`guides ortracks formed of flatv metal strips extending p'arallel with said first named anges respec- -bars and said crossbraces, a cross .bar se-4 l tively, bars disposed between `a -portion of' said strips and adapted to space them away Vfrom the flange supporting same, cross braces carried by said last named flanges and spaced apart a distance equaling the height of a shaft opening, a vertically movable door structure mounted upon said guides or tracks and adapted to close the space within said side bars and said cross braces, pulleys above the upper otsaid cross braces, and a suspension cable co-'operating with said door structure and said `pulleys. 4

. 8. A dumbwaiter door embodying therein vertically extending metal angle bars each having; one flange adapted to extend par* allel with the wall of a dumbwaiter shaft, and a flange adapted to'form a side jamb of an opening in sai-d shaft, guides or tracks formed of ilat Imetal strips extending rpar- `allel with said first named @anges-respectively, bars disposed between a portion of said strips and adapted to space'them `away from the lange supporting saine, cross braces carried by saidlastnamedfanges and spaced apart a distance equaling the height of a shaft opening, va vertically'movable door structure having an angular" metal frame, the opposite side bars of said frame each having an langle bar permanently secured thereto, one llange ofwhich is adapted to enter the space between said strip and the angle supporting same, said door struc:

t'ure being adapted to close the space within said side bars and said cross braces, pulleys above the upper of said cross braces, and a suspension cable co-operating with said door structurel and -said pulleys. A, i

9. A dumbwaiter door embodying therein metal side bars, guides or tracks carried by said bars respectively, cross braces carried by said bars, said-braces being spaced apart a distance equaling the height of 'a shaft opening, a vertically movable door structure mounted upon said guides or tracks and adapted to close the space within said side cured adjacent the' top of said side bars, 'l

pulley boxes formed at each Aend thereof, a pulley mounted in each ofsaidboxes, and a.,suspensio n cable co-operating with said door structure and said pulleys.

. 1n witness whereof `I'have lhereunto all fixed my signature, inthe presence of two subscribing witnesses, thi's'th day of May,

1920. l f 'BENJAMIN WEXLER.

YWitnesses Femm Kosmetik,- y.Sernin M. BAEDER. 

